Replacing A Base3Dpm - Siemens Maxum II Service Manual

3.7

Replacing a Base3DPM

Removing the Base3DPM
See the illustration
Installed on Left Side of Base3DPM for connector and module locations.
1. Back up and shut down the unit using the
2. Open the electronics enclosure door.
3. Disconnect the detector signal cable from the mezzanine module.
– FID and FPD mezzanine modules use SMA coaxial cables. Unscrew the nut to unplug
– Analog input mezzanine modules use small terminal block connectors that can be
4. Disconnect the fIlament detector cable if present.
5. Disconnect the RTD temperature input cables (top rear of unit, if present).
6. If present, take out screws holding the IS ground cables (typically only installed on modular
oven models).
7. Remove the nut on the bottom-front of DPM bracket.
8. Slide the unit forward to disengage the rear mounting lug.
9. Lift the unit up and part way out of the enclosure.
10.Disconnect the I
of the board.
11.Remove the unit from the analyzer and place on ESD-safe work surface.
12.Unscrew the two mounting screws at the top corners of the mezzanine module, and unplug
it from the Base3 DPM.
13.Unscrew the mounting screw for the temperature setpoint module stack using the access
hole in the metal plate near the filament detector input.
14.Unplug the temperature setpoint module stack from the left side of the board.
15.Remove the two mounting screws near the upper corners and remove the old board from
the cage.
Configuring the New Base3DPM
Set the location ID switch on the replacement unit to match the unit being removed.
Installing the Replacement Base3DPM
1. Install the new unit into the DPM cage. Insert the bottom edge into the slot in the plastic
DPM mounting rail on the DPM cage, and secure with the two screws removed from the
old unit.
2. Plug the temperature setpoint module stack onto its mount on the left side of the unit.
Maxum Edition II Detectors
Service Manual, May 2018, A5E42019847001
Base3 DPM With Mezzanine Module and Temperature Setpoint Modules
the cable.
unplugged.
C/power cable and temperature control output cables from the rear edge
2
Flame Photometric Detector
3.7 Replacing a Base3DPM
General Analyzer Shutdown Procedure .
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